* {
    margin: 0;
    padding: 0;
}

li {
    list-style-type: none;
}

body {
    background-color: #242424;
}

/* 版心 */
.w {
    width: 1200px;
    margin: 0 auto;
}

/* 浮动清除 */
.clearfix:after,
.clearfix:before {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}

.clearfix {
    *zoom: 1;
}